WHITMAN MISSION, WASHINGTON

Monthly Total Heating Degree Days

(459200)

Base Temperature = 65 F

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1962 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 405.00 568.50 780.50 1754.00
1963 1116.00 689.50 569.00 465.50 235.00 59.50 32.00 13.00 74.50 309.00 618.50 1003.00 5184.50
1964 779.50 715.00 675.50 467.50 286.50 74.00 20.50 36.68 a 158.50 480.50 735.50 1011.00 5440.68
1965 896.50 635.00 745.00 346.00 255.75 a 65.00 17.00 33.50 198.00 322.50 608.04 b 902.62 a 5024.90
1966 869.50 730.00 623.00 422.50 212.00 111.50 29.00 23.00 54.50 392.50 623.79 a 742.50 4833.79
1967 661.33 a 627.50 621.50 553.50 256.50 34.50 0.00 3.00 49.00 359.50 714.50 885.00 4765.83
1968 846.00 648.50 535.00 485.00 233.00 65.00 14.00 31.50 119.00 482.50 680.00 1002.00 5141.50
1969 1343.50 833.00 639.00 427.00 152.50 33.50 14.00 36.00 100.50 509.50 683.00 903.00 5674.50
1970 971.50 663.00 658.50 541.50 209.50 53.00 9.50 6.00 232.50 505.00 720.52 a 894.00 5464.52
1971 741.93 a 696.50 708.00 468.00 205.50 128.00 29.50 17.00 257.50 517.00 666.00 865.50 5300.43
1972 994.00 812.00 538.00 527.00 202.53 a 40.00 11.50 16.50 226.73 d 463.50 698.00 1170.50 5700.26
1973 1075.00 784.00 561.00 428.00 199.50 105.00 21.50 35.00 135.00 413.00 718.00 758.00 5233.00
1974 1126.50 614.50 611.14 c 436.50 288.00 60.50 26.00 14.00 137.00 474.50 623.00 807.00 5218.64
1975 946.00 830.00 727.50 567.50 282.00 106.00 4.50 26.50 157.50 402.00 704.50 850.50 5604.50
1976 843.00 750.50 708.50 517.50 250.50 165.50 21.50 40.00 76.00 487.00 704.00 976.00 5540.00
1977 1236.00 687.50 627.50 364.50 327.00 38.50 33.50 19.00 188.50 485.50 749.00 864.50 5621.00
1978 1011.00 717.50 559.03 a 431.50 267.00 62.00 14.50 45.00 169.50 499.00 954.50 1057.00 5787.53
1979 1548.00 780.50 599.00 407.50 205.50 79.50 23.50 0.00 a 79.82 b 371.50 872.00 814.50 5781.32
1980 1197.50 841.50 668.57 a 349.00 212.35 a 110.69 a 9.00 68.50 121.00 476.76 b 673.00 841.13 a 5569.00
1981 880.18 c 728.50 585.50 426.50 264.50 121.00 45.00 19.24 b 155.00 513.50 672.41 a 879.50 5290.83
1982 964.00 730.50 647.50 539.50 281.00 67.50 35.00 24.00 247.00 528.00 873.50 930.00 5867.50
1983 810.50 657.00 563.50 497.50 226.00 106.00 35.00 9.00 260.50 482.00 558.00 1291.00 5496.00
1984 531.50 n 732.00 534.50 462.50 331.50 127.00 15.00 24.00 78.50 j 533.50 710.00 1120.00 4590.00
1985 1177.00 927.00 655.50 310.00 193.50 72.50 0.00 34.50 260.00 0.00 z 1113.00 1392.93 a 6135.93
1986 968.00 732.50 514.00 441.50 264.00 26.00 15.50 0.00 186.00 392.00 638.00 1000.00 5177.50
1987 1079.00 717.50 542.00 323.00 150.00 67.50 32.50 29.00 106.50 461.00 664.29 b 943.00 5115.29
1988 988.00 737.00 619.00 366.00 238.00 114.50 19.00 27.50 163.00 294.00 583.50 982.50 5132.00
1989 834.50 1166.00 704.50 358.00 269.50 42.00 12.00 16.00 137.00 447.50 595.50 954.00 5536.50
1990 767.00 784.50 625.50 309.00 266.00 87.00 15.00 17.00 47.00 460.00 587.00 1240.00 5205.00
1991 1067.00 585.00 678.00 398.50 277.00 143.00 6.00 8.00 111.00 467.00 728.50 851.50 5320.50
1992 810.00 666.50 553.50 339.50 163.00 49.50 12.50 47.50 189.00 426.50 725.00 985.50 4968.00
1993 1305.00 1017.00 739.50 412.00 150.00 91.00 27.00 54.00 169.50 390.00 933.50 888.50 6177.00
1994 780.00 804.50 583.00 297.50 170.50 88.50 8.50 7.50 68.00 473.00 725.00 878.50 4884.50
1995 983.00 625.50 640.50 469.00 224.00 107.00 8.00 51.50 88.00 500.00 598.00 940.00 5234.50
1996 973.50 963.50 661.50 370.50 300.50 91.50 17.50 25.50 159.50 444.50 513.00 j 997.68 a 5005.68
1997 508.50 p 698.50 535.00 461.00 187.00 80.50 19.00 0.00 95.50 446.00 708.00 899.50 4130.00
1998 893.12 b 648.50 623.50 467.50 0.00 z 49.50 0.00 z 0.00 z 62.50 0.00 z 0.00 z 905.20 a 3649.82
1999 756.40 a 622.50 622.00 510.50 319.50 97.50 33.50 17.64 b 179.50 501.00 594.31 a 786.88 a 5041.23
2000 898.47 b 744.00 648.00 349.50 213.00 81.00 9.50 28.93 a 182.00 492.50 933.62 a 1031.78 a 5612.30
2001 981.67 a 797.50 619.50 475.00 231.50 116.50 23.77 a 18.60 a 84.00 474.82 a 700.34 a 868.00 a 5391.19
2002 858.00 746.50 718.00 411.00 279.50 81.00 12.50 30.50 163.00 563.50 778.50 806.00 5448.00
2003 762.50 732.50 485.50 426.50 250.00 44.00 7.50 2.50 101.00 327.50 833.50 932.00 4905.00
2004 1153.50 774.50 503.50 404.50 218.00 84.00 11.50 5.50 121.50 387.00 752.50 872.00 5288.00
2005 986.00 817.00 532.50 406.00 164.00 82.50 2.00 14.00 161.50 397.50 774.00 1107.50 5444.50
2006 688.50 832.00 628.50 431.50 239.45 b 37.50 0.00 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2857.45
Period of Record Statistics
MEAN 965.90 751.00 616.78 428.84 236.08 80.62 17.95 23.24 143.63 446.62 716.53 945.72 5353.19
S.D. 187.60 111.57 67.29 69.53 47.65 32.32 10.70 15.90 60.34 64.73 117.22 137.91 311.69
SKEW 0.87 1.50 0.04 0.02 -0.02 0.37 0.44 0.64 0.28 -0.64 1.29 1.28 0.27
MAX 1548.00 1166.00 745.00 567.50 331.50 165.50 45.00 68.50 260.50 563.50 1113.00 1392.93 6177.00
MIN 661.33 585.00 485.50 297.50 150.00 26.00 0.00 0.00 47.00 294.00 558.00 742.50 4765.83
NO YRS 42 44 44 44 43 44 42 42 42 42 42 44 38